Haul-back carriage for reciprocating scrapers.



T. G. KELLY.

HAUL-BACK CARRIAGE FOR REGIPROGATING SGRAPBRS.

APPLICATION FILED DEU.26,1911.

1,031,342, Patented July 2, 1912.

' ="r 1o1viAsfen'rcfinL KELLY, or CLIFTON, onneoN.

Kar na citizen of the United 'States,' residing" at Cliftonyinthe county of Clatso'p and State of Oregon, have invented c'ertain new'and useful Improvements in lilaul-liack Carriages for 'Reciprocating"Scrapers, of which'the followlng lbfljtt specification.

' j The present invention relates to haul back Carriages for-reciprocating scrapers, and has for-its ob ect, to provide aycarrlage for the return movement of the scraper after the loadhas been discharged.

[AE further object 1's'to provide a means for returning-the scraper clear of the earth so that "-it may be returned by a low power,

"thereby anew the engine toaccumulate steam for't'he; loading movement,

' resents. the side members of ascraper, of'

These and otberiobje cts, are accomplished by. the mechanism illustrated in the accomfl panyingdrawingin 'whichv Figure 1 isa plan-view of the device. Fig. 2 is-a side'elevation showing the scraper raise'd'by the carrier in the return -move$ ,ment. Fig. 31s a-similarylew, showing the carriage raised 'and the scraper in operation .on a forward movement.

B ferringZ-to' the drawing in detail, 1 r

the "form which is operated byreciproca'tory --m'ov ements,the scraper being loaded and '{idraw'n 'to its destination by an advance 'movement, and then retracted along substantially-thesa'm'e line for re-loading. 2 is the rear end member formed on the I erect a circle, to the upper and lower edges of which are secured cutting members 3,

- which are sharpened and extendeda suitable distance beyond the respective edges of the side members, thereby forming cuttingedges. for engaging in the earth, It

,will' be observed that the scraper is reversible, so thatit may be'operated with either "Leiden ward. Between the front ends of the si e men bers, is fixed a transverse bar --or stayfgto which is hingedly secured the pullbail 5. I To this bail is attached the connecting chain 6, through which power -is 'applied to the scraper-by means of the main line, 9, which is connected thereto, by means of ring 7, and hooks 8 and 10"; To

' the rear end'me'mber, at a suitable distance from each edge thereof, is fixed in trans verse 'alinement, a set of hinge brackets 1.4. Toeach set of brackets, upon pins 22-, is ected the carriage 16 bv means ofa v Specification of Letters Patent. "1 Application filed December 26, 1911-, Serial No. 667,946.

BLULBACK c AnRIAen r011, nncirnocn'rme scnarnns.

"co1"responding set of brackcts,'15. These power upon thehaul back line, 19, which is connected to the carriage by means of book 18 engaged in the 'eye 17, the scraper is. raised from the ground and retracted as Patented July2,

desired. Acrotch line or cable 11 is passed-1 through the eye 17, and .extendedlaterally along each side of the scraper through its; respective keepers, 13 at the rcarythence through keepers 12*- at the front, after ,7

which, each'end portion is inclined toward the center, and united by means of hooks 10 with the ring 7, and thereby connected with themain-line 9.

I In the traction of the device by the haul back line .19, -c'HSCIi1p0I'- is drawn clear of the ground at "the rear end by the carriage,"

,and the main line is retracted by the crotch vline, 1 1, which passes freely within the keepers, .12 and 13. In the'forward pull,

the first strain on the main line, comesupon the crotch line, which advances through its keepers and swings the carriage uponv its 3. At this point, the line 9 will h ave advanced sufiiciently to draw the chain 6, taut, when the power will be applied to the scraper, causing it to be loaded anddrawnto its forward d stinatioin When its load shall have been ilischarged, the haul back line will again retract the main line, ex

tending the carriage and raising the scraper as seen in Fig. 2, when the entire device will be retracted thereby.

The keepers,-12 and 13, are provided with a retainer 12 and 13, respectively at their intermediate portions, so that either end thereof, may be employed to retain the hinges to the vertical position shown in Fig.- 7

crotch line, according to the side of the scraper, whichis uppermost. These retainers support the crotch line above the pivotal point of-the carriage- It will be. seen that the carriage which presents to the ground a broad surface, gradually inclined upwardly at its free edge, will not sink into the vearth in any ordinary condition thereof, and will not settle into small cavities nor permit the scraper to engage the usual obstructions; and it therefore prevents it from being easi lg overturned. Without the use of the carrie e, the scraper dragging on the groun would gather the earth and ob structiong; and would consume almost as -much power as m the loading operation.

The powern'ecessery to return the scraper, by the old e-of this improvement, 15 much less :than lnlerdlnary Usage; the engine can therefore replenish its steam during such return movement, and will we become exhausted by unprofiteole work. i Variousmodificeiions'of the device may "be employed for performing'the functions herein described, bnt'all" of which is Withindthe spirit gend scope of my'invention; What I eleyn as new; is:

I 1. The combination with e scraper, of

hinges. secured upon thereer end-piece jneer the lower edge thereof, keepers, fixed neer the .upper edge ehoutthe scraper, e drag apron havinge widthepproximately equal to that f-th r, the free edge of which converges 'bowerd'its center end-is, curved up .werdly, hinge bracketsi having a length greater than "the height of their: upon she --scraper, e crotch line passing throu h a loop in. the free edge lofpbhe drag, tience through the keepers at thenpper edge of the scraper, an inheul cable connected to the scraper, and an outheui cahle operating on the free edge of the drag.

2. The combination with a scraper, of hinges secured upon the rear end-piece near the lower edge thereof, keepers fixed near apron pivotally connected to said hinges, the free edge of which converges toward its center and is curved upwardiy, a crotch line passing through a loop in the free ere eti-henpper edge of the scrapenend in onthaul cable securedto thefree edge of the drag.

the upper edge about ihe scraper, a drag scraper for connecting the drag to the front portion of the crotch line and to the edge of the drag, thence flirough-thekeep In testimony whereof I affix my signature v v 

